Us rapper Phaz, 35 - who performed at last week's British Grand Prix party in London - rumbled an autograph hunter who he suspected wanted to sell his signature. The chancer told the star he was his biggest fan - but Pharrell didn't believe him so asked him to name N.E.R.D's new album.

The "fan" didn't know so Pharrell refused to sign.

It's actually called Seeing Sounds - any chance of an autograph, please Pharrell?